Treatment of realistic tidal field in Monte Carlo simulations of star clusters

被引:18
作者
Sollima, A. [1 ]
Mastrobuono Battisti, A. [2 ]
机构
[1] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy
[2] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel
关键词
methods: numerical; methods: statistical; stars: kinematics and dynamics; globular clusters: general; N-BODY SIMULATIONS; FOKKER-PLANCK MODELS; MASS BLACK-HOLES; GLOBULAR-CLUSTERS; DYNAMICAL EVOLUTION; DIRECT INTEGRATION; STELLAR EVOLUTION; SYSTEMS; GALAXY; ORBITS;
D O I
10.1093/mnras/stu1426
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for both the loss of stars from the cluster boundary and the disc/bulge shocks. We provide recipes to handle with eccentric orbits in complex galactic potentials. The first calculations for stellar systems containing 21 000 and 42 000 equal-mass particles show good agreement with direct N-body simulations in terms of the evolution of both the enclosed mass and the Lagrangian radii provided that the mass-loss rate does not exceed a critical value.
引用
收藏
页码:3513 / 3527
页数:15
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